Super handy for cutting paper - jobs that require a matt type knife or a razor blade will go real nice with this little folder and then you simply change out the blade (includes 6 extra but you can use both the front and back so you get 12 fresh edges to run on.) Weight is 3.4 ounces and the knife is 6 " in the open position. To replace the blade you remove it by pressing in on the thumbstud and then pulling out the blade.